<!DOCTYPE html>
<html>
<head>
    <title>马浩男</title>
    <meta charset="utf-8">
    <style>
        .dropdown {
            position: relative;
            display: inline-block;
        }
        .dropdown-content {
            display: none;
            position: absolute;
            background-color: #f9f9f9;
            min-width: 160px;
            box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
            padding: 12px 16px;
        }
        .dropdown:hover .dropdown-content {
            display: block;
        }
        .thumbnail
        {
            float:left;
            width:110px;
            height:90px;
            margin:5px;
        }
    </style>
</head>
<body>

<h2>鼠标移动后出现下拉菜单</h2>
<p>将鼠标移动到指定元素上就能看到下拉菜单。</p>

<div class="dropdown">
    <span>鼠标移动到我这！</span>
    <div class="dropdown-content">
        <p>菜鸟教程</p>
        <p>www.runoob.com</p>
    </div>
</div>
<p>改变网页大小</p>
<img class="thumbnail" src="banner2.jpg" width="107" height="90">
<img class="thumbnail" src="banner2.jpg" width="107" height="80">
<img class="thumbnail" src="ba.jpg" width="116" height="90">
<img class="thumbnail" src="/images/klematis4_small.jpg" width="120" height="90">
<img class="thumbnail" src="/images/klematis_small.jpg" width="107" height="90">
<img class="thumbnail" src="/images/klematis2_small.jpg" width="107" height="80">
<img class="thumbnail" src="/images/klematis3_small.jpg" width="116" height="90">
<img class="thumbnail" src="/images/klematis4_small.jpg" width="120" height="90">

</body>
</html>